<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>相对定位</title>
    <link href="css/css_08_相对定位.css" rel="stylesheet">
</head>
<body>
<div class="d1">
    <div class="d2">d2</div>
    <div class="d3">d3占据文档流,相对该元素原来的位置 进行的偏离</div>
    <div class="d4">d4</div>
</div>
</body>
</html>